A Tool for Subdivision of Quad/Tri Meshes with Sharp Features

Designers often want the added flexibility of having both quads and triangles in their models. It is also well known that triangle meshes generate poor limit surfaces when using a quad scheme, while quadonly meshes behave poorly with triangular schemes. Further, regular subdivision produces smooth surfaces even from sharp-cornered base meshes and sometimes sharpness in the subdivision surface is desrired. In this project we introduce a new tool for subdivision of meshes with triangles and and quadrilaterals, with user-specified sharpness on edges which permits great flexibility in controlling the output subdivision surface. This project essentially integrates two separate algorithms introduced by previous work into one framework, and provides a user-interface for interactive subdivision of quad-tri meshes.